Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual superfície tem Natalia Gussoni como parceira?
 ###Tabelas: CREATE TABLE worldwide (worldwide_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Location VARCHAR, 2008 VARCHAR, 2009 VARCHAR, 2010 VARCHAR, 2011 INT, 2012 INT) CREATE TABLE all_players (all_players_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Highest singles ranking VARCHAR, Highest doubles ranking VARCHAR, First year played INT, Years played INT, Ties played INT, Total W–L VARCHAR, Singles W–L VARCHAR, Doubles W–L VARCHAR) CREATE TABLE junior_champions (junior_champions_id AUTO_INCREMENT PRIMARY KEY, Year INT, Men's singles VARCHAR, Women's singles VARCHAR, Men's doubles VARCHAR, Women's doubles VARCHAR, Mixed doubles VARCHAR) CREATE TABLE at_internet_institute_europe_2007-07_to_2010–06 (at_internet_institute_europe_2007-07_to_2010–06_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Internet Explorer VARCHAR, Firefox VARCHAR, Opera VARCHAR, Safari VARCHAR, Source VARCHAR) CREATE TABLE itf_circuit_doubles:_9_4–5 (itf_circuit_doubles:_9_4–5_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Date VARCHAR, Tournament VARCHAR, Surface VARCHAR, Partner VARCHAR, Opponent in the final VARCHAR, Score in the final VARCHAR)  
SELECT Surface FROM itf_circuit_doubles:_9_4–5 WHERE Partner = natalia gussoni